2166650502111 has 40 divisors (see below), whose sum is σ = 3381261295104. Its totient is φ = 1380997466640.

The previous prime is 2166650502083. The next prime is 2166650502169. The reversal of 2166650502111 is 1112050566612.

It is not a de Polignac number, because 2166650502111 - 2¹⁸ = 2166650239967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166650502811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4989561 + ... + 5406386.

Almost surely, 2^{2166650502111} is an apocalyptic number.

2166650502111 is a deficient number, since it is larger than the sum of its proper divisors (1214610792993).

2166650502111 is a wasteful number, since it uses less digits than its factorization.

2166650502111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396073 (or 10396064 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 2166650502111 in words is "two trillion, one hundred sixty-six billion, six hundred fifty million, five hundred two thousand, one hundred eleven".